diff --git a/api/@ohos.devicestatus.d.ts b/api/@ohos.devicestatus.d.ts
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+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0 
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Callback } from "./basic";
+
+/**
+ * Declares a namespace that provides APIs to report the device status.
+ *
+ * @since 9
+ * @syscap SystemCapability.Msdp.DeviceStatus
+ * @import import DeviceStatus from '@ohos.DeviceStatus'
+ */
+declare namespace deviceStatus {
+    /**
+     * Declares a response interface to receive the device status.
+     *
+     * @syscap SystemCapability.Msdp.DeviceStatus
+     * @since 9
+     */
+    interface ActivityResponse {
+        state: ActivityState;
+    }
+	
+    /**
+     * Declares the device status type.
+     *
+     * @syscap SystemCapability.Msdp.DeviceStatus
+     * @since 9
+     */
+    type ActivityType = 'still' | 'relativeStill';
+
+    /**
+     * Enumerates the device status events.
+     *
+     * @syscap SystemCapability.Msdp.DeviceStatus
+     * @since 9
+     */
+    enum ActivityEvent {
+        /**
+         * Event indicating entering device status.
+         */ 
+        ENTER = 1,
+		
+        /**
+         * Event indicating exiting device status.
+         */
+        EXIT = 2,
+		
+        /**
+         * Event indicating entering and exiting device status.
+         */
+        ENTER_EXIT = 3
+    }
+	
+    /**
+     * Declares a response interface to receive the device status.
+     *
+     * @syscap SystemCapability.Msdp.DeviceStatus
+     * @since 9
+     */
+    enum ActivityState {
+        /**
+         * Entering device status.
+         */
+        ENTER = 1,
+		
+        /**
+         * Exiting device status.
+         */
+        EXIT = 2
+    }
+
+    /**	
+     * Subscribes to the device status.
+     *
+     * @param activity Indicates the device status type. For details, see {@code type: ActivityType}.
+     * @param event Indicates the device status event.
+     * @param reportLatencyNs Indicates the event reporting period.
+     * @param callback Indicates the callback for receiving reported data.
+     * @syscap SystemCapability.Msdp.DeviceStatus
+     * @since 9
+     */
+    function on(activity: ActivityType, event: ActivityEvent, reportLatencyNs: number, callback: Callback<ActivityResponse>): void;
+	
+    /**
+     * Obtains the device status.
+     *
+     * @param activity Indicates the device status type. For details, see {@code type: ActivityType}.
+     * @param callback Indicates the callback for receiving reported data.
+     * @syscap SystemCapability.Msdp.DeviceStatus
+     * @since 9
+     */
+    function once(activity: ActivityType, callback: Callback<ActivityResponse>): void;
+	
+    /**
+     * Unsubscribes from the device status.
+     *
+     * @param activity Indicates the device status type. For details, see {@code type: ActivityType}.
+     * @param event Indicates the device status event.
+     * @param callback Indicates the callback for receiving reported data.
+     * @syscap SystemCapability.Msdp.DeviceStatus
+     * @since 9
+     */
+    function off(activity: ActivityType, event: ActivityEvent, callback?: Callback<ActivityResponse>): void;
+}
+
+export default deviceStatus;
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